Patterson was convicted back in December of voluntary manslaughter for the death of 22-year-old Julian Dawkins.

On May 22, 2013, Patterson, a 17-year veteran with the sheriff's office, got into a dispute with Dawkins on the corner of Lynnhaven Drive and Evans Lane. At some point during the dispute, Dawkins was shot. Police said Patterson stayed on the scene.

But prosecutor Bryan Porter argued, "This case was not about self-defense; it was about self-respect, or disrespect." Porter argued that Patterson felt disrespected in his first encounter with Dawkins, and left to get his gun moments later.

On Thursday, the prosecutor said Patterson's sentence is a message to law enforcement about their responsibility to protect citizens.

Gwenn Pratt-Miller, Dawkins' mother, said she's happy with the judge's decision to uphold the sentence, but said it won't bring her son back.

Patterson's attorney said the judge gave a fair ruling but he'll be discussing the option of appeal with Patterson. They have 30 days to appeal the sentence.